More than half of those who have ever injected drugs (PWID) in Scotland have hepatitis C (HCV) and six out of ten remain undiagnosed, a modelling study has estimated. Case finding is essential both from the individual health and public health perspectives. Much of this will be undertaken in drug services. The study shows that a high proportion of undiagnosed cases are no longer injecting and are in an older age group, and so may no longer be in contact with drug services. Doctors working in primary care may need to take a more active role in case finding. ‘Targeting older individuals with a history of injecting drug use though primary care can also be an effective case-finding approach,’ the authors state.